1.How many students are there in your class?There are 50.
2.How much is the book?It is 20 yuan.
3.How often do you go shopping?I usually go shopping once a week.
4.How old are you?I am twenty.
5.How long
6.How do you do?How do you do.
7.How are you?Fine,Thanks.
8.不知道你这个wather什么意思